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I have a RichTextBox in which I'd like blanks to appear different from

nothing. Imagine a file which does not fill up the RTB. You can't tell how

many, if any, blanks might follow the last visible, i.e. non-whitespace,

character. I thought that I could set the BackColor of the RTB to LightGray

and then the blanks would show up as white. But instead the characters show

up on a LightGray background and the blanks, of course, show up as LightGray

spaces.



Is there a solution (which does not require a lot of graphics expertise and

code)?



Thanks, Bob


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Define 'blank'!





"eBob.com" <eBob.com@totallybogus.com>wrote in message

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eBob.com wrote:

Put some text like "[End]" at the end?



Andrew





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On Apr 3, 11:16=A0pm, "eBob.com" <eBob....@totallybogus.com>wrote:

Umm, why are you doing this?



If you are just wanting to get the user to clean up their extra blank

lines then just do it for them. A simple loop with a negitive step

through the lines property should allow you to trim off any blank

lines (not sure if calling Trim on the text will work or not).



Thanks,



Seth Rowe [MVP]

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"Stephany Young" <noone@localhost>



Not Maori?



Cor





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"rowe_newsgroups" <rowe_email@yahoo.com>wrote in message

On Apr 3, 11:16 pm, "eBob.com" <eBob....@totallybogus.com>wrote:

Umm, why are you doing this?



If you are just wanting to get the user to clean up their extra blank

lines then just do it for them. A simple loop with a negitive step

through the lines property should allow you to trim off any blank

lines (not sure if calling Trim on the text will work or not).



Thanks,



Seth Rowe [MVP]



I'm developing an application to assist me in the construction of regular

expressions. (I know about Expresso and I am a huge fan. But I have some

needs which go beyond its capabilities.) To develop "tight" regular

expressions I'd like to be able to distinguish between one tab character and

a few blanks.



But more generally, isn't the representation of a file in an RTB more

accurate if you can distinguish between character blanks and space where

there is no graphic for some other reason such as a tab character? (The

first program I wrote for Windows, long before .Net, displayed a file in

hexadecimal! That's how you know what's really in a file!)



In fact it was that first program which led me to believe that it would be

easy in .Net to set a background color for a font which was different from

the background color for the RTB. I didn't do exactly that since I wasn't

using an RTB but I did something similar.



If I can bring up another problem which I anticipate with RTBs, I'd like to

highlight all of the strings in a file which match a regular expression.

But it looks to me like an RTB can have only one "Selected" string. So I am

looking for a solution to this problem as well.



Thanks, Bob





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"rowe_newsgroups" <rowe_email@yahoo.com>wrote in message

On Apr 3, 11:16 pm, "eBob.com" <eBob....@totallybogus.com>wrote:

Umm, why are you doing this?



If you are just wanting to get the user to clean up their extra blank

lines then just do it for them. A simple loop with a negitive step

through the lines property should allow you to trim off any blank

lines (not sure if calling Trim on the text will work or not).



Thanks,



Seth Rowe [MVP]



I'm developing an application to assist me in the construction of regular

expressions. (I know about Expresso and I am a huge fan. But I have some

needs which go beyond its capabilities.) To develop "tight" regular

expressions I'd like to be able to distinguish between one tab character and

a few blanks.



But more generally, isn't the representation of a file in an RTB more

accurate if you can distinguish between character blanks and space where

there is no graphic for some other reason such as a tab character? (The

first program I wrote for Windows, long before .Net, displayed a file in

hexadecimal! That's how you know what's really in a file!)



In fact it was that first program which led me to believe that it would be

easy in .Net to set a background color for a font which was different from

the background color for the RTB. I didn't do exactly that since I wasn't

using an RTB but I did something similar.



If I can bring up another problem which I anticipate with RTBs, I'd like to

highlight all of the strings in a file which match a regular expression.

But it looks to me like an RTB can have only one "Selected" string. So I am

looking for a solution to this problem as well.



Thanks, Bob







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